Gyres move way more water than the mp’s. I have both on my 600 and two gyres move more water than 4 mp60s. The gyres are easy enough to clean with a little citric acid or vinegar. Wet side magnets continue to fail realeasing metals into the tank and are quite costly to replace every 2 years, also the MPs aren’t aimable, they only flow one way even if it would be better another way. Not to beat up on just the MPs, gyres aren’t quite as robust in build quality. Gyres have limited native controllability though you can use an adapter and build your own program if you own an apex and you aren’t using the 280 gyre which there’s no adapter for. Not a big deal for me because I run two at the surface at 100% continually. I clean them once every six months or so. Cleaning is about the same for either. Replacement parts are far more expensive for the MPs and are going up in price, my last dry side was$275, wet sides are $100. I’m in the process of replacing all of my MPs with tunze pumps which are far more reliable long term, push water farther and are aimable all of which are important to me.